000 00267 a2200121 4500
082 _a666.4
_bN21 V.11
100 _aBradley, W.F.
245 1 _aCLAYS AND CLAY MINERALS
260 _a
_bPergamon Press
_c1963
300 _a
964 _gCIRC
997 _aA247 v. 11 s C
999 _c456557
_d456557